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add -W to specify window size. various other little fixes.
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  1 28994509 2004-04-21 devnull #include <u.h>

  2 28994509 2004-04-21 devnull #include <libc.h>

  3 28994509 2004-04-21 devnull #include <bio.h>

  4 28994509 2004-04-21 devnull #include <draw.h>

  5 28994509 2004-04-21 devnull #include <event.h>

  6 28994509 2004-04-21 devnull #include "imagefile.h"

  7 28994509 2004-04-21 devnull 

  8 28994509 2004-04-21 devnull extern int	debug;

  9 28994509 2004-04-21 devnull int	cflag = 0;

 10 28994509 2004-04-21 devnull int	dflag = 0;

 11 28994509 2004-04-21 devnull int	eflag = 0;

 12 28994509 2004-04-21 devnull int	nineflag = 0;

 13 28994509 2004-04-21 devnull int	threeflag = 0;

 14 28994509 2004-04-21 devnull int	colorspace = CRGB;

 15 28994509 2004-04-21 devnull int	output = 0;

 16 28994509 2004-04-21 devnull ulong	outchan = CMAP8;

 17 28994509 2004-04-21 devnull Image	*image;

 18 28994509 2004-04-21 devnull int	defaultcolor = 1;

 19 28994509 2004-04-21 devnull 

 20 28994509 2004-04-21 devnull enum{

 21 28994509 2004-04-21 devnull 	Border	= 2,

 22 28994509 2004-04-21 devnull 	Edge	= 5

 23 28994509 2004-04-21 devnull };

 24 28994509 2004-04-21 devnull 

 25 28994509 2004-04-21 devnull char	*show(int, char*, int);

 26 28994509 2004-04-21 devnull 

 27 28994509 2004-04-21 devnull void

 28 28994509 2004-04-21 devnull eresized(int new)

 29 28994509 2004-04-21 devnull {

 30 28994509 2004-04-21 devnull 	Rectangle r;

 31 28994509 2004-04-21 devnull 

 32 28994509 2004-04-21 devnull 	if(new && getwindow(display, Refnone) < 0){

 33 28994509 2004-04-21 devnull 		fprint(2, "png: can't reattach to window\n");

 34 28994509 2004-04-21 devnull 		exits("resize");

 35 28994509 2004-04-21 devnull 	}

 36 28994509 2004-04-21 devnull 	if(image == nil)

 37 28994509 2004-04-21 devnull 		return;

 38 28994509 2004-04-21 devnull 	r = insetrect(screen->clipr, Edge+Border);

 39 28994509 2004-04-21 devnull 	r.max.x = r.min.x+Dx(image->r);

 40 28994509 2004-04-21 devnull 	r.max.y = r.min.y+Dy(image->r);

 41 28994509 2004-04-21 devnull 	border(screen, r, -Border, nil, ZP);

 42 28994509 2004-04-21 devnull 	draw(screen, r, image, nil, image->r.min);

 43 28994509 2004-04-21 devnull 	flushimage(display, 1);

 44 28994509 2004-04-21 devnull }

 45 28994509 2004-04-21 devnull 

 46 28994509 2004-04-21 devnull void

 47 be36ff68 2004-04-29 devnull usage(void)

 48 be36ff68 2004-04-29 devnull {

 49 be36ff68 2004-04-29 devnull 	fprint(2, "usage: png -39cdekrtv -W winsize [file.png ...]\n");

 50 be36ff68 2004-04-29 devnull 	exits("usage");

 51 be36ff68 2004-04-29 devnull }

 52 be36ff68 2004-04-29 devnull 

 53 be36ff68 2004-04-29 devnull void

 54 28994509 2004-04-21 devnull main(int argc, char *argv[])

 55 28994509 2004-04-21 devnull {

 56 28994509 2004-04-21 devnull 	int fd, i;

 57 28994509 2004-04-21 devnull 	char *err;

 58 28994509 2004-04-21 devnull 	char buf[12+1];

 59 28994509 2004-04-21 devnull 

 60 28994509 2004-04-21 devnull 	ARGBEGIN{

 61 be36ff68 2004-04-29 devnull 	case 'W':

 62 be36ff68 2004-04-29 devnull 		winsize = EARGF(usage());

 63 be36ff68 2004-04-29 devnull 		break;

 64 28994509 2004-04-21 devnull 	case 'c':		/* produce encoded, compressed, bitmap file; no display by default */

 65 28994509 2004-04-21 devnull 		cflag++;

 66 28994509 2004-04-21 devnull 		dflag++;

 67 28994509 2004-04-21 devnull 		output++;

 68 28994509 2004-04-21 devnull 		if(defaultcolor)

 69 28994509 2004-04-21 devnull 			outchan = CMAP8;

 70 28994509 2004-04-21 devnull 		break;

 71 28994509 2004-04-21 devnull 	case 'D':

 72 28994509 2004-04-21 devnull 		debug++;

 73 28994509 2004-04-21 devnull 		break;

 74 28994509 2004-04-21 devnull 	case 'd':		/* suppress display of image */

 75 28994509 2004-04-21 devnull 		dflag++;

 76 28994509 2004-04-21 devnull 		break;

 77 28994509 2004-04-21 devnull 	case 'e':		/* disable floyd-steinberg error diffusion */

 78 28994509 2004-04-21 devnull 		eflag++;

 79 28994509 2004-04-21 devnull 		break;

 80 28994509 2004-04-21 devnull 	case 'k':		/* force black and white */

 81 28994509 2004-04-21 devnull 		defaultcolor = 0;

 82 28994509 2004-04-21 devnull 		outchan = GREY8;

 83 28994509 2004-04-21 devnull 		break;

 84 28994509 2004-04-21 devnull 	case 'r':

 85 28994509 2004-04-21 devnull 		colorspace = CRGB;

 86 28994509 2004-04-21 devnull 		break;

 87 28994509 2004-04-21 devnull 	case '3':		/* produce encoded, compressed, three-color bitmap file; no display by default */

 88 28994509 2004-04-21 devnull 		threeflag++;

 89 28994509 2004-04-21 devnull 		/* fall through */

 90 28994509 2004-04-21 devnull 	case 't':		/* produce encoded, compressed, true-color bitmap file; no display by default */

 91 28994509 2004-04-21 devnull 		cflag++;

 92 28994509 2004-04-21 devnull 		dflag++;

 93 28994509 2004-04-21 devnull 		output++;

 94 28994509 2004-04-21 devnull 		defaultcolor = 0;

 95 28994509 2004-04-21 devnull 		outchan = RGB24;

 96 28994509 2004-04-21 devnull 		break;

 97 28994509 2004-04-21 devnull 	case 'v':		/* force RGBV */

 98 28994509 2004-04-21 devnull 		defaultcolor = 0;

 99 28994509 2004-04-21 devnull 		outchan = CMAP8;

100 28994509 2004-04-21 devnull 		break;

101 28994509 2004-04-21 devnull 	case '9':		/* produce plan 9, uncompressed, bitmap file; no display by default */

102 28994509 2004-04-21 devnull 		nineflag++;

103 28994509 2004-04-21 devnull 		dflag++;

104 28994509 2004-04-21 devnull 		output++;

105 28994509 2004-04-21 devnull 		if(defaultcolor)

106 28994509 2004-04-21 devnull 			outchan = CMAP8;

107 28994509 2004-04-21 devnull 		break;

108 28994509 2004-04-21 devnull 	default:

109 be36ff68 2004-04-29 devnull 		usage();

110 28994509 2004-04-21 devnull 	}ARGEND;

111 28994509 2004-04-21 devnull 

112 28994509 2004-04-21 devnull 	if(dflag==0 && colorspace==CYCbCr){	/* see if we should convert right to RGB */

113 28994509 2004-04-21 devnull 		fd = open("/dev/screen", OREAD);

114 28994509 2004-04-21 devnull 		if(fd > 0){

115 28994509 2004-04-21 devnull 			buf[12] = '\0';

116 28994509 2004-04-21 devnull 			if(read(fd, buf, 12)==12 && chantodepth(strtochan(buf))>8)

117 28994509 2004-04-21 devnull 				colorspace = CRGB;

118 28994509 2004-04-21 devnull 			close(fd);

119 28994509 2004-04-21 devnull 		}

120 28994509 2004-04-21 devnull 	}

121 28994509 2004-04-21 devnull 

122 28994509 2004-04-21 devnull 	err = nil;

123 28994509 2004-04-21 devnull 	if(argc == 0)

124 28994509 2004-04-21 devnull 		err = show(0, "<stdin>", outchan);

125 28994509 2004-04-21 devnull 	else{

126 28994509 2004-04-21 devnull 		for(i=0; i<argc; i++){

127 28994509 2004-04-21 devnull 			fd = open(argv[i], OREAD);

128 28994509 2004-04-21 devnull 			if(fd < 0){

129 28994509 2004-04-21 devnull 				fprint(2, "png: can't open %s: %r\n", argv[i]);

130 28994509 2004-04-21 devnull 				err = "open";

131 28994509 2004-04-21 devnull 			}else{

132 28994509 2004-04-21 devnull 				err = show(fd, argv[i], outchan);

133 28994509 2004-04-21 devnull 				close(fd);

134 28994509 2004-04-21 devnull 			}

135 28994509 2004-04-21 devnull 			if((nineflag || cflag) && argc>1 && err==nil){

136 28994509 2004-04-21 devnull 				fprint(2, "png: exiting after one file\n");

137 28994509 2004-04-21 devnull 				break;

138 28994509 2004-04-21 devnull 			}

139 28994509 2004-04-21 devnull 		}

140 28994509 2004-04-21 devnull 	}

141 28994509 2004-04-21 devnull 	exits(err);

142 28994509 2004-04-21 devnull }

143 28994509 2004-04-21 devnull 

144 28994509 2004-04-21 devnull char*

145 28994509 2004-04-21 devnull show(int fd, char *name, int outc)

146 28994509 2004-04-21 devnull {

147 28994509 2004-04-21 devnull 	Rawimage **array, *r, *c;

148 28994509 2004-04-21 devnull 	static int inited;

149 28994509 2004-04-21 devnull 	Image *i;

150 28994509 2004-04-21 devnull 	int j, ch, outchan;

151 28994509 2004-04-21 devnull 	Biobuf b;

152 28994509 2004-04-21 devnull 	char buf[32];

153 28994509 2004-04-21 devnull 

154 28994509 2004-04-21 devnull 	if(Binit(&b, fd, OREAD) < 0)

155 28994509 2004-04-21 devnull 		return nil;

156 28994509 2004-04-21 devnull 	outchan = outc;

157 28994509 2004-04-21 devnull 	array = Breadpng(&b, colorspace);

158 28994509 2004-04-21 devnull 	if(array == nil || array[0]==nil){

159 28994509 2004-04-21 devnull 		fprint(2, "png: decode %s failed: %r\n", name);

160 28994509 2004-04-21 devnull 		return "decode";

161 28994509 2004-04-21 devnull 	}

162 28994509 2004-04-21 devnull 	Bterm(&b);

163 28994509 2004-04-21 devnull 

164 28994509 2004-04-21 devnull 	r = array[0];

165 28994509 2004-04-21 devnull 	if(!dflag && !inited){

166 28994509 2004-04-21 devnull 		if(initdraw(0, 0, 0) < 0){

167 28994509 2004-04-21 devnull 			fprint(2, "png: initdraw failed: %r\n");

168 28994509 2004-04-21 devnull 			return "initdraw";

169 28994509 2004-04-21 devnull 		}

170 28994509 2004-04-21 devnull 		einit(Ekeyboard|Emouse);

171 28994509 2004-04-21 devnull 		if(defaultcolor && screen->depth>8 && outchan==CMAP8)

172 28994509 2004-04-21 devnull 			outchan = RGB24;

173 28994509 2004-04-21 devnull 		inited++;

174 28994509 2004-04-21 devnull 	}

175 28994509 2004-04-21 devnull 	if(outchan == CMAP8)

176 28994509 2004-04-21 devnull 		c = torgbv(r, !eflag);

177 28994509 2004-04-21 devnull 	else{

178 28994509 2004-04-21 devnull 		if(outchan==GREY8 || (r->chandesc==CY && threeflag==0)){

179 28994509 2004-04-21 devnull 			c = totruecolor(r, CY);

180 28994509 2004-04-21 devnull 			outchan = GREY8;

181 28994509 2004-04-21 devnull 		}else

182 28994509 2004-04-21 devnull 			c = totruecolor(r, CRGB24);

183 28994509 2004-04-21 devnull 	}

184 28994509 2004-04-21 devnull 	if(c == nil){

185 28994509 2004-04-21 devnull 		fprint(2, "png: conversion of %s failed: %r\n", name);

186 28994509 2004-04-21 devnull 		return "torgbv";

187 28994509 2004-04-21 devnull 	}

188 28994509 2004-04-21 devnull 	if(!dflag){

189 28994509 2004-04-21 devnull 		if(c->chandesc == CY)

190 28994509 2004-04-21 devnull 			i = allocimage(display, c->r, GREY8, 0, 0);

191 28994509 2004-04-21 devnull 		else

192 28994509 2004-04-21 devnull 			i = allocimage(display, c->r, outchan, 0, 0);

193 28994509 2004-04-21 devnull 		if(i == nil){

194 28994509 2004-04-21 devnull 			fprint(2, "png: allocimage %s failed: %r\n", name);

195 28994509 2004-04-21 devnull 			return "allocimage";

196 28994509 2004-04-21 devnull 		}

197 28994509 2004-04-21 devnull 		if(loadimage(i, i->r, c->chans[0], c->chanlen) < 0){

198 28994509 2004-04-21 devnull 			fprint(2, "png: loadimage %s failed: %r\n", name);

199 28994509 2004-04-21 devnull 			return "loadimage";

200 28994509 2004-04-21 devnull 		}

201 28994509 2004-04-21 devnull 		image = i;

202 28994509 2004-04-21 devnull 		eresized(0);

203 28994509 2004-04-21 devnull 		if((ch=ekbd())=='q' || ch==0x7F || ch==0x04)

204 28994509 2004-04-21 devnull 			exits(nil);

205 28994509 2004-04-21 devnull 		draw(screen, screen->clipr, display->white, nil, ZP);

206 28994509 2004-04-21 devnull 		image = nil;

207 28994509 2004-04-21 devnull 		freeimage(i);

208 28994509 2004-04-21 devnull 	}

209 28994509 2004-04-21 devnull 	if(nineflag){

210 28994509 2004-04-21 devnull 		chantostr(buf, outchan);

211 28994509 2004-04-21 devnull 		print("%11s %11d %11d %11d %11d ", buf,

212 28994509 2004-04-21 devnull 			c->r.min.x, c->r.min.y, c->r.max.x, c->r.max.y);

213 28994509 2004-04-21 devnull 		if(write(1, c->chans[0], c->chanlen) != c->chanlen){

214 28994509 2004-04-21 devnull 			fprint(2, "png: %s: write error %r\n", name);

215 28994509 2004-04-21 devnull 			return "write";

216 28994509 2004-04-21 devnull 		}

217 28994509 2004-04-21 devnull 	}else if(cflag){

218 28994509 2004-04-21 devnull 		if(writerawimage(1, c) < 0){

219 28994509 2004-04-21 devnull 			fprint(2, "png: %s: write error: %r\n", name);

220 28994509 2004-04-21 devnull 			return "write";

221 28994509 2004-04-21 devnull 		}

222 28994509 2004-04-21 devnull 	}

223 28994509 2004-04-21 devnull 	for(j=0; j<r->nchans; j++)

224 28994509 2004-04-21 devnull 		free(r->chans[j]);

225 28994509 2004-04-21 devnull 	free(r->cmap);

226 28994509 2004-04-21 devnull 	free(r);

227 28994509 2004-04-21 devnull 	free(array);

228 28994509 2004-04-21 devnull 	if(c){

229 28994509 2004-04-21 devnull 		free(c->chans[0]);

230 28994509 2004-04-21 devnull 		free(c);

231 28994509 2004-04-21 devnull 	}

232 28994509 2004-04-21 devnull 	return nil;

233 28994509 2004-04-21 devnull }